Feeding strategy and prey selectivity in Cnesterodon decemmaculatus and Jenynsia multidentata in experimental enclosures: Importance for the biological control of mosquito populations

Bonifacio, Alejo Fabián; Usseglio, Virginia Lara; Hued, Andrea Cecilia; Aun, Ma. Liliana; Martori, Ricardo

doi:10.1016/j.biocontrol.2019.02.010

Cited by 4 publications

(4 citation statements)

References 37 publications

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“…However, in our study, no significant differences were observed in size between males and females. This observation could potentially be attributed to the differences between studies conducted in a natural environment, [39][40][41] in contrast to controlled environmental conditions under which the fish were reared.…”

Section: Discussionmentioning

confidence: 99%

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Eugenol as anesthetic for Cnesterodon decemmaculatus (Cyprinodontiformes, Poeciliidae)

Vercellini,

Rearte,

di Cesare

et al. 2023

Lab Anim

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Anesthetics are commonly used in fish for surgery and to facilitate capture, handling and transport in aquaculture and experimental procedures. In research, the selection of the anesthetic depends on its properties and on the recovery time. Eugenol has been pointed out as an effective anesthetic for fish, alternative to traditional drugs. Although Cnesterodon decemmaculatus is widely used as a model in ecological bioassays, no anesthetic protocol has been reported for this species. The aim of the present study was to evaluate the induction time (i.e. time to reach anesthetic stage VI) and recovery time in individuals of C. decemmaculatus subjected to eugenol at a fixed concentration, according to sex and pregnancy status. Forty-one fish were divided into three groups: males, pregnant females and non-pregnant females. They were measured for total length, standard length and weight, and the condition factor (K) was calculated. No significant differences in induction and recovery times were found for sex, pregnancy status and K between groups. Results are a contribution toward the development protocol of a standard anesthetic protocol for C. decemmaculatus.

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Section: Discussionmentioning

confidence: 99%

“…2 Cnesterodon decemmaculatus has been proposed as a local sentinel for monitoring environmental contamination and as an excellent laboratory model for ecological studies. [18][19][20][21] Despite this, no anesthetic protocols have been yet conducted in this species.…”

Section: Introductionmentioning

confidence: 99%

Eugenol as anesthetic for Cnesterodon decemmaculatus (Cyprinodontiformes, Poeciliidae)

Vercellini,

Rearte,

di Cesare

et al. 2023

Lab Anim

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“…Cnesterodon decemmaculatus Jenyns is of particular ecological importance in aquatic habitats. It serves as a biological control agent for mosquito larvae (Bonifacio et al, 2019); acts as an important consumer of zooplankton and drives changes to the phyloplankton community (Quintans et al, 2009); and represents an important prey item for top food web-organisms (Ostrowski de Nuñez, 1974Nuñez, , 1992Nuñez, , 1993Nuñez, , 1995Doma & Ostrowski de Núñez, 1994;Yafe et al, 2002). In addition, C. decemmaculatus has been used as a biological indicator of pollution (Bistoni et al, 1999;De la Torre et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Saccocoelioides kirchnerin. sp. (Digenea: Haploporidae) from the killifishCnesterodon decemmaculatus(Cyprinodontiformes: Poeciliidae) from Argentina, morphological and molecular description

et al. 2022

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This paper presents a new haploporid digenean that expands the number of species of Saccoccoelioides to 27. The new species, Saccocoelioides kirchneri n. sp. was collected from the intestine of Cnesterodon decemmaculatus (Poeciliidae: Cyprinodontiformes) from Lago del Bosque, La Plata, Argentina. The new species possesses the diagnostic features for Saccocoelioides: a sac like ceca; the vitellarium confined in two irregular groups of follicles distributed between the ventral sucker and the anterior margin of the testis; and a uterus confined largely in the hind-body, but encroaching into the range of the ventral sucker. The new species is differentiated from the 26 congeners by the body size, pharynx size, ventral sucker size, posterior extent of ceca, posterior extent of uterus and egg size. S. kirchneri n. sp. also is supported by the molecular analysis.

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“…Cyclops vernalis , Megacyclops formosanus , Mesocyclops (M.) aspericornis , Mesocyclops edax , Mesocyclops guangxiensis , Mesocyclops longisetus and Mesocyclops thermocyclopoides ) are two classic examples, 24–30 the former severely endangering indigenous aquatic life following the intentional introduction in several regions worldwide 31 . Researchers also considered anurans, as predators of both eggs and larvae, 32,33 as well as a wide number of larvivorous fishes 34–36 and arthropods, including water bugs, 37 other mosquito species ( Toxorhynchites spp. ) 38,39 and odonates 23,40–42 …”

Section: Introductionmentioning

confidence: 99%

Adult damselflies as possible regulators of mosquito populations in urban areas

Córdoba‐Aguilar

Miguel-Rodríguez

Rocha‐Ortega

et al. 2021

Pest Management Science

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BACKGROUND Dragonfly and damselfly larvae have been considered as possible biocontrol agents against young instars of mosquito vectors in urban environments. Yet our knowledge about adult odonate predation against mosquito adults is scarce. We quantified daily and annual predation rates, consumption rates and prey preferences of adult Hetaerina vulnerata male damselflies in an urban park. A focus on predation of mosquito species was provided, quantified their arbovirus (dengue, chikungunya and Zika) infection rates and biting activity. RESULTS Foraging times of H. vulnerata overlapped with those of the maximum activity of hematophagous mosquitoes. The most consumed preys were Diptera and Hymenoptera and, in lower quantities, Hemiptera, Coleoptera, Trichoptera, Psocoptera and Neuroptera. Of note, 7% of the diet was represented by hematophagous dipterans, with 2.4% being Aedes aegypti and Aedes albopictus. Prey abundance in the diet coincided with that of the same species in the environment. The arboviral infection rate (dengue, chikungunya and Zika) was 1.6% for A. aegypti and A. albopictus. The total biting rate of these mosquito vectors was 16 bites per person per day, while the annual rate of infectious bites was 93.4. CONCLUSION Although 2.4% for both Aedes species seems a low consumption, considering the presence of 12 odonate species at the park, it can be argued that adult odonates may play a relevant role as mosquito vector regulators, therefore impacting the spread of mosquito‐borne diseases. Our study outlines the need for further research on the topic of the possible role of adult odonates for mosquito biocontrol. © 2021 Society of Chemical Industry.

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Feeding strategy and prey selectivity in Cnesterodon decemmaculatus and Jenynsia multidentata in experimental enclosures: Importance for the biological control of mosquito populations

Cited by 4 publications

References 37 publications

Eugenol as anesthetic for Cnesterodon decemmaculatus (Cyprinodontiformes, Poeciliidae)

Eugenol as anesthetic for Cnesterodon decemmaculatus (Cyprinodontiformes, Poeciliidae)

Saccocoelioides kirchnerin. sp. (Digenea: Haploporidae) from the killifishCnesterodon decemmaculatus(Cyprinodontiformes: Poeciliidae) from Argentina, morphological and molecular description

Adult damselflies as possible regulators of mosquito populations in urban areas

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